/****************************************************************
 * Copyright (C) 2006 LAMS Foundation (http://lamsfoundation.org)
 * =============================================================
 * License Information: http://lamsfoundation.org/licensing/lams/2.0/
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2.0 
 * as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 * 
 * http://www.gnu.org/licenses/gpl.txt
 * ****************************************************************
 */
package org.lamsfoundation.testharness.learner;

import java.util.concurrent.CountDownLatch;

import org.apache.log4j.Logger;
import org.lamsfoundation.testharness.AbstractTest;
import org.lamsfoundation.testharness.Call.CallType;

/**
 * @version
 *
 * <p>
 * <a href="LearnerTest.java.html"><i>View Source</i></a>
 * </p>
 *
 * @author <a href="mailto:fyang@melcoe.mq.edu.au">Fei Yang</a>
 */
public class LearnerTest extends AbstractTest {
	
	private static final Logger log = Logger.getLogger(LearnerTest.class);

    protected String getLessonURL;
    protected String getLearningDesignURL;
    protected String joinLessonURL;
    protected String getFlashProgressDataURL;
    protected String lessonEntryURL;
    protected String[] filesToUpload;
    protected String subContextRoot; //  usually "/learning/", this is set to figure out passon.swf url 
    protected CountDownLatch allDoneSignal;
    
    /**
     * LearnerTest Constructor
     *
     */
    public LearnerTest(String testName, CallType callType, String rmiRegistryName, String webServiceAddress, Integer minDelay, Integer maxDelay, String getLessonURL, String getLearningDesignURL, String joinLessonURL, String getFlashProgressDataURL, String lessonEntryURL, String[] filesToUpload) {
        super(testName,callType,rmiRegistryName,webServiceAddress, minDelay, maxDelay);
        this.getLessonURL = getLessonURL;
        this.getLearningDesignURL = getLearningDesignURL;
        this.joinLessonURL = joinLessonURL;
        this.getFlashProgressDataURL = getFlashProgressDataURL;
        this.lessonEntryURL = lessonEntryURL;
        this.subContextRoot = '/'+ getLessonURL.split("/")[1] + '/';
        this.filesToUpload = filesToUpload;
    }

	@Override
	protected void startWEB(){
		log.info(users.length+(users.length==1? " learner begins studying..." : " learners begin studying..."));
		allDoneSignal = new CountDownLatch(users.length);
		for(int i=0; i<users.length; i++){
			MockLearner learner = (MockLearner)users[i];
			new Thread(learner, learner.getUsername()).start();
		}
		try {
			allDoneSignal.await();
			log.info(composeEndInfo());
		} catch (InterruptedException e) {
			log.debug(e.getMessage(), e);
			// what to do?
		}
	}

	private String composeEndInfo(){
		int abortedCounter = countAborted();
		int finishedCounter = countFinished();
		if(finishedCounter == 0){
			return composeSubject(users.length)+" aborted on the lesson";
		}
		if(abortedCounter == 0){
			return composeSubject(users.length)+" finished the lesson";
		}
		return finishedCounter + (finishedCounter==1? " learner finished the lesson while " : " learners finished the lesson while ")
			+ abortedCounter + (abortedCounter==1? "learner aborted on the lesson" : "learners aborted on the lesson");
		
	}
	
	private String composeSubject(int length){
		switch(length){
		case 1:
			return "The only learner";
		case 2:
			return "Both the learners";
		default:
			return "All the "+length+" learners";
		}
	}
	
	public int countAborted(){
		int amount = 0;
		for(MockLearner learner: (MockLearner[])users){
			if(!learner.isFinished())
				amount++;
		}
		return amount;
	}
	
	public int countFinished(){
		return users.length - countAborted();
	}
	
	public int countLearners(){
		return users==null? 0 : users.length;
	}
	
	@Override
	protected void startWS(){
		//TODO implement me
	}

	@Override
	protected void startRMI(){
		//TODO implement me
	}

	public final String[] getFilesToUpload() {
		return filesToUpload;
	}
}